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DON CURTIS LUCE, on BnocxroN', MASSACHUSETTS,AssIeNoR To OLIVER n. MILLER, or SAME PLACE.

MEANS FOR LOCKING OR UNLOCKING HINGED LASTS.

SPECIFICATION forming part of Letters Patent-No. 608,782, dated August 9, 1898.

Application iiled November 8, 1897.` Serial No. 657,748. (No model.)

To all whom t may concern.-

ie it known that I, DON CURTIS LUCE, of Brockton, in the county of Plymouth and Stato of ldassachusetts, have invented certain new and useful Improvements in Means for Locking or Unlocking Hinged Lasts, of which the following is a specification.

This invention has for its object to provide simple and convenient means for locking and 1o unlocking a transversely-divided hinged last Which is provided with a locking device of the character hereinafter' described, said device comprising a locking arm or button afiixed to a stud or spindle which is rotatively mounted t 5 in one of the sections of the last and is provided With a head projecting from the last beside or in close proximity to the spindlesocket of the last.

My improved operating device comprises a zo fixed jaw adapted to grasp the head of the spindle of the locking arm or button and a projection or Spindle eccentrically located with relation to said fixed jaW and adapted to rotate about the latter, said spindle being adapted to enter the Spindle socket of the last, While at the same time the head of the locking-arm rod on the last is adapted to engage the fixed jaW, so that a partial rotation of the last upon said iixed jaw as a center will cause the disengagement of the locking arm or button from the fore-part section of the last.

Of the accompanying drawings, forming a part of this speciiication, Figure l represents a sectional view showing my improved lastblock-operating device and a last in position thereon, the last being locked. Fig. 2 represents a similar View showing the parts in the position they occupy when unlocked. Figs. 3 and a represent perspective views of parts of my improved device. Fig. 5 shows the spring-Washer detached,

The same letters of reference indicate the same parts in all the gures.

In the drawings, @represents the fore-part section, and b the heel-section, of a transversely-divided last, .Said parts being hingedv together or articulately bonded by any suitable means, so that one section can be swung from its operative relation to the other secn 5o tion for the purpose of swinging the last.

d represents a locking arm or button which is affixed to a rod or spindle CZ, rotatively mounted in the heel-section l), the arm or button d being eccentrically mounted on the rod d', so that said button may be'moved into engagement 'with the fore part section, as shown in Fig. l, or out of engagement there- With, as shown in Fig. 2. The rod d is provided With a head cl2, Which projects from the 6o upper surface of the heel-section at a point in close proximity to the usual spindle-socket e, formed in the heel-section. The locking arm or button d, its operating-rod d', and head cl2 comprise a locking device which 65 forms the subject of the application of O. A. Miller, led concurrently herewith.

In carrying out my invention I provide a means for operating the said locking device, which Will next be described. 7o

f represents a fixed jaw, Which is supported by suitable means-such as a standard f, adapted to be secured to a bench or table or otherwise firmly held-the jaw f being a bolt or stud inserted in a socket in said standard and secured thereto by a set-screw f2. The iixed jaw f is adapted to be detachably engaged with the head (Z2, said jaw having a slot f3 formed to receive said head.

g represents a spindle formed to enter the 8o spindle-socket e and eccentrically'arranged relatively to the iixed jaW f and adapted to rotate about the latter. I have here Shown the spindle affixed to an arm g', formed on a sleeve g2, Which is fitted to rotate loosely upon 8 5 the fixed jaw f, said sleeve resting upon the standard f. The lixed janT f and spindle g are so arranged that when the spindle-socket of the last is placed upon .the spindle g the head dzof the buttonfoperating rod will at 9o the same time enter the slot]c3 in the fixed jaw f. It will be seen, therefore, that When the parts are in the position shown in Fig. l, the locking arm or button d projecting over the fore-part section, a partial rotation of the last to the position shown in Fig. 2 Will. cause the fore-part and heel sections of the last to change places, the locking arm or button remaining xed, so that the fore-part section is moved out of engagement with said button, and is therefore free to be swung downwardly.

When an operator desires to unlock the sections of a last and remove it from a shoe, he places the last on the spindle g in the position shown in Fig. 1 and gives the last a partial rotation to the position shown in Fig. 2. The heel-section of the last may be allowed to remain upon the spindle while the fore-part section is being swung downwardly `to swing the last and enable the shoe to be removed. y When another shoe has been applied to the last and it is desired to again lock the' sections, the last is swung from the position shown in Fig. 2 to that shown in Fig. l, thus locking the last while it is in the shoe.

To prevent loose rotation of the spindlesupporting sleeve, I interpose between said sleeve and the standard a spring-washer 7c, which is held under tension between the said parts and operates by friction to prevent the sleeve from turning too easily. Said washer maybe an annular disk having radial slits 7c and normally dished, as shown in Fig. 5, so

that when subjected to pressure between the parts g2 and f it will offer frictional resistv ance to the turning of the part g2.

l. As a means for locking and unlocking the sections of a transversely-divided last, a standard or support having a fixed jaw 0r member formed to engage a locking device on the last, and a last-engaging member rotatable about said fixed jaw.

2. As a means for locking and unlocking the sections of a transversely-divided last, a standard or support having a fixed jaw or member formed to engage a locking device on the last, and a spindle or projection rotatable about said lixed jaw and adapted to enter a socket or recess in the last.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing Witnesses, this 22d day of September, A. D. 1897.

DON CURTIS LUCE.

Witnesses:

' A. D. HARRISON,

P. W. PEZZETTL 

